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A053880 Numbers n such that n^2 contains only digits {1,2,4}. 1
1, 2, 11, 12, 21, 38, 338, 1488, 3338, 11011, 20521, 33338, 210771, 333338, 3333338, 14636332, 15570521, 20279162, 33333338, 45947921, 49136668, 66641662, 333333338, 648940838, 3333333338, 6412661079, 14632642079, 33333333338 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

LINKS

Author?, Source(txt)

P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences

CROSSREFS

Cf. A053881.

Sequence in context: A007931 A136407 A136999 * A063112 A038113 A089600

Adjacent sequences:  A053877 A053878 A053879 * A053881 A053882 A053883

KEYWORD

nonn,base

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com), Mar 15 2000.

EXTENSIONS

More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 04 2005

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Last modified February 13 09:48 EST 2012. Contains 205451 sequences.